Granted Patent
Utility
US 4,623,537 · App. 06/622,491
Oral hygiene compositions
Inventor:
Nancye D. Kearns
Patented Case
View Patent ↗
Granted: Nov 18, 1986
Filed: Jun 20, 1984
Inventor
Nancye D. Kearns
Assignee (at issue)
Union Carbide Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.